Restraint of the Burr when Cutting of Austenite Stainless Steel by the Application of Magnetic Field Assisted Method(Surface and edge finishing)

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Austenite stainless steels are frequently used as the materials of precise instruments because of their excellent properties. However, the machining of these materials is relatively difficult. In particular, the suppression of burr formation and deburring are important problems in addition to tool life. In this study, we report the suppression of burr formation by the application of a magnetic-field-assisted cutting method when cutting SUS304. Experiments on groove machining using an ultra precision lathe and experiments on turning using an engine lathe are conducted. Coated cemented carbide tools with particles of 0.5μm diameter and coated or noncoated binder less cemented carbide tools are used for grooving. The burr sizes decrease upon the application of the magnetic-field-assisted method. From the orthogonal cutting experiments, the martensitic transformation from the austenitic structure, which was accelerated by the application of magnetic field and work hardening in the austenitic structure, caused the suppression of burr formation.
2005-10-18